<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3//EN">
<HTML><HEAD>
		<TITLE>User's Reference - UpdateCamera</TITLE>
		<META HTTP-EQUIV="keywords" CONTENT="GRAPHICS VISUALIZATION VISUAL PROGRAM DATA
MINING">
	<meta http-equiv="content-type" content="text/html;charset=ISO-8859-1">
</HEAD><BODY BGCOLOR="#FFFFFF" link="#00004b" vlink="#4b004b">
		<TABLE width=510 border=0 cellpadding=0 cellspacing=0>
			<TR>
				<TD><IMG src="../images/spacer.gif" width=80 height=1></TD>
				<TD><IMG src="../images/spacer.gif" width=49 height=1></TD>
				<TD><IMG src="../images/spacer.gif" width=24 height=1></TD>
				<TD><IMG src="../images/spacer.gif" width=100 height=1></TD>
				<TD><IMG src="../images/spacer.gif" width=3 height=1></TD>
				<TD><IMG src="../images/spacer.gif" width=127 height=1></TD>
				<TD><IMG src="../images/spacer.gif" width=6 height=1></TD>
				<TD><IMG src="../images/spacer.gif" width=50 height=1></TD>
				<TD><IMG src="../images/spacer.gif" width=71 height=1></TD>
			</TR>
			<TR>
				<TD colspan=9><IMG src="../images/flcgh_01.gif" width=510 height=24 alt="OpenDX - Documentation"></TD>
			</TR>
			<TR>
				<TD colspan=2><A href="../allguide.htm"><IMG src="../images/flcgh_02.gif" width=129 height=25 border="0" alt="Full Contents"></A></TD>
				<TD colspan=3><A href="../qikguide.htm"><IMG src="../images/flcgh_03.gif" width=127 height=25 border="0" alt="QuickStart Guide"></A></TD>
				<TD><A href="../usrguide.htm"><IMG src="../images/flcgh_04.gif" width=127 height=25 border="0" alt="User's Guide"></A></TD>
				<TD colspan=3><B><A href="../refguide.htm"><IMG src="../images/flcgh_05d.gif" width=127 height=25 border="0" alt="User's Reference"></A></B></TD>
			</TR>
			<TR>
				<TD><A href="refgu164.htm"><IMG src="../images/flcgh_06.gif" width=80 height=17 border="0" alt="Previous Page"></A></TD>
				<TD colspan=2><A href="refgu166.htm"><IMG src="../images/flcgh_07.gif" width=73 height=17 border="0" alt="Next Page"></A></TD>
				<TD><A href="../refguide.htm"><IMG src="../images/flcgh_08.gif" width=100 height=17 border="0" alt="Table of Contents"></A></TD>
				<TD colspan=3><A href="refgu009.htm"><IMG src="../images/flcgh_09.gif" width=136 height=17 border="0" alt="Partial Table of Contents"></A></TD>
				<TD><A href="refgu175.htm"><IMG src="../images/flcgh_10.gif" width=50 height=17 border="0" alt="Index"></A></TD>
				<TD><A href="../srchindx.htm"><IMG src="../images/flcgh_11.gif" width=71 height=17 border="0" alt="Search"></A></TD>
			</TR>
		</TABLE>
		<H3><A name="HDRUPDATCA" ></A>UpdateCamera</H3>
		<A NAME="IDX761"></A><A NAME="IDX762"></A>
<P><STRONG>Category</STRONG>
<P>
<A HREF="refgu008.htm#HDRCATREN">Rendering</A>
<P><STRONG>Function</STRONG>
<P>
Alters an existing camera.
<P><STRONG>Syntax</STRONG>
<PRE><STRONG>
camera</STRONG> = UpdateCamera(<STRONG>camera, to, from, width, resolution, aspect, up,
                perspective, angle, background</STRONG>);
</PRE>
<P><STRONG>Inputs</STRONG>
<BR>
<TABLE BORDER>
<TR>
<TH ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">Name
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">Type
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">Default
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">Description
</TH></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>camera</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">camera
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">none
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">camera to be altered
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>to</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">vector or object
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">&#91;0 0 0&#93;
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">look-to point
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>from</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">vector or object
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">&#91;0 0 1&#93;
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">position of camera
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>width</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">scalar or object
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">100
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">width of field of view
(for orthographic projection)
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>resolution</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">integer
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">640
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">horizontal resolution of image
(in pixels)
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>aspect</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">scalar
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">0.75
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">height/width
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>up</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">vector
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">&#91;0 1 0&#93;
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">up direction
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>perspective</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">flag
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">0
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">0: orthographic projection
<BR>
1: perspective projection
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>angle</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">scalar
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">30.0
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">view angle (in degrees)
(for perspective projection)
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>background</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">vector or string
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">&quot;black&quot;
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">image background color
</TD></TR></TABLE>
<P><STRONG>Outputs</STRONG>
<BR>
<TABLE BORDER>
<TR>
<TH ALIGN="LEFT" VALIGN="TOP" WIDTH="25%">Name
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="25%">Type
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="50%">Description
</TH></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="25%"><TT><STRONG>camera</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="25%">camera
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="50%">altered camera
</TD></TR></TABLE>
<P><STRONG>Functional Details</STRONG>
<P>
The altered camera produced by this module is identical to the
input <TT><STRONG>camera</STRONG></TT> except for the specified
camera parameters (<TT><STRONG>to</STRONG></TT>,
<TT><STRONG>from</STRONG></TT>, etc.).
For a description of these parameters, see <A
HREF="refgu021.htm#HDRCAMERA">Camera</A>.
<P><STRONG>See Also</STRONG>
<P>
&nbsp;<A HREF="refgu015.htm#HDRAUTOCAM">AutoCamera</A>,
&nbsp;<A HREF="refgu021.htm#HDRCAMERA">Camera</A>,
&nbsp;<A HREF="refgu033.htm#HDRCOLOR">Color</A>,
&nbsp;<A HREF="refgu047.htm#HDRDIRECT">Direction</A>,
&nbsp;<A HREF="refgu118.htm#HDRRENDER">Render</A>
		<P>
		<HR>
		<DIV align="center">
			<P><A href="../allguide.htm"><IMG src="../images/foot-fc.gif" width="94" height="18" border="0" alt="Full Contents"></A> <A href="../qikguide.htm"><IMG src="../images/foot-qs.gif" width="94" height="18" border="0" alt="QuickStart Guide"></A> <A href="../usrguide.htm"><IMG src="../images/foot-ug.gif" width="94" height="18" border="0" alt="User's Guide"></A> <A href="../refguide.htm"><IMG src="../images/foot-ur.gif" width="94" height="18" border="0" alt="User's Reference"></A></P>
		</DIV>
		<DIV align="center">
			<P><FONT size="-1">[ <A href="http://www.research.ibm.com/dx">OpenDX Home at IBM</A>&nbsp;|&nbsp;<A href="http://www.opendx.org/">OpenDX.org</A>&nbsp;] </FONT></P>
			<P></P>
		</DIV>
		<P></P>
	</BODY></HTML>
